Inductor

Abstract

In one embodiment, the inductor includes: a substrate, arranged with multiple lower conducting layers, a magnetic core, disposed on the substrate, and an insulating cover, covering the substrate and wrapping the magnetic core. Multiple upper conducting layers are arranged on a surface of the insulating cover. The upper conducting layers and the lower conducting layers are alternately connected to form at least one coil winding around the magnetic core. Two ends of the coil are respectively used to conduct external electrical signals.

1 . An inductor, comprising:
 a substrate, arranged with multiple lower conducting layers;   a magnetic core, disposed on the substrate; and   an insulating cover, covering the substrate and wrapping the magnetic core, wherein multiple upper conducting layers are arranged on a surface of the insulating cover,   wherein the upper conducting layers and the lower conducting layers are alternately connected to form at least one coil winding around the magnetic core, and two ends of the coil are respectively used to conduct external electrical signals.   
     
     
         2 . The inductor according to  claim 1 , wherein the upper conducting layers and the lower conducting layers are alternately connected to form at least two coils, and the two coils are coupled. 
     
     
         3 . The inductor according to  claim 2 , wherein the coils are disposed on the magnetic core at an interval. 
     
     
         4 . The inductor according to  claim 2 , wherein the coils are disposed on the magnetic core in a staggered manner. 
     
     
         5 . The inductor according to  claim 1 , wherein the coil winds along an outer periphery of the magnetic core repeatedly in a superposing manner, the coil has multiple split rings connected with each other, each split ring is formed by one of the upper conducting layers and one of the lower conducting layers that are connected, and at least a part of the split rings of the coil are layered in an inner-outer pattern with the magnetic core as a center. 
     
     
         6 . The inductor according to  claim 5 , wherein an inner surface and an outer surface of the insulating cover are respectively used for arranging the upper conducting layers of the layered different split rings. 
     
     
         7 . The inductor according to  claim 5 , wherein the substrate comprises multiple layers, and the different layers of the substrate are respectively used for arranging the lower conducting layers of the layered different split rings. 
     
     
         8 . The inductor according to  claim 1 , wherein more than two stacked insulating covers are disposed on the substrate. 
     
     
         9 . The inductor according to  claim 1 , wherein a through hole is formed through a top surface of the magnetic core, and a groove entering the through hole is correspondingly recessed in a top portion of the insulating cover. 
     
     
         10 . The inductor according to  claim 1 , wherein several deformable openings are formed at an interval on a side wall of the insulating cover, and the deformable openings are formed upward from a bottom portion of the side wall of the insulating cover.